One summer vacation, Ye Yun unexpectedly receives a letter from an unknown place. The moment she opens it, the letter erupts with light and sends her into a world blanketed in yellow sand. There, Ye Yun is struck by an unknown calamity and attacked by an unknown force. In that instant, her body is destroyed.
Her soul falls into a void swamp and drifts aimlessly, moving without purpose. A day? A year? She wanders endlessly until her soul grows weary and she falls unconscious.
No one knows how long passed, or where she drifted.
From within the void, an enormous eye, filling everything, opens. Beside it are countless eyes, each growing smaller, stretching into the distance like a magnificent wall built of eyes.
The great eye at the center looks down at the drifting soul.
"The examiner grants entry into the sequence!" The voice drifts through the air, glorious and immense, yet it stirs no ripples, as though it were merely an illusion.
As the voice, like something from a dream, resounds, the great eye at the center suddenly closes. All the other eyes close as well, without a sound.